High-power few-cycle THz generation at MHz repetition rates in an organic crystal

Buchmann, Tobias Olaf; Railton Kelleher, Edmund John; Jazbinsek, Mojca; Zhou, Binbin; Seok, Jin-Hong; Kwon, O-Pil; Rotermund, Fabian; Jepsen, Peter Uhd

doi:10.1063/5.0022762

Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-21559

Full metadata record

DC Field	Value	Language
dc.contributor.author	Buchmann, Tobias Olaf	-
dc.contributor.author	Railton Kelleher, Edmund John	-
dc.contributor.author	Jazbinsek, Mojca	-
dc.contributor.author	Zhou, Binbin	-
dc.contributor.author	Seok, Jin-Hong	-
dc.contributor.author	Kwon, O-Pil	-
dc.contributor.author	Rotermund, Fabian	-
dc.contributor.author	Jepsen, Peter Uhd	-
dc.date.accessioned	2021-02-04T13:31:47Z	-
dc.date.available	2021-02-04T13:31:47Z	-
dc.date.issued	2020	-
dc.identifier.issn	2378-0967	de_CH
dc.identifier.uri	https://digitalcollection.zhaw.ch/handle/11475/21559	-
dc.description.abstract	Ultrafast terahertz (THz) spectroscopy is a potent tool for studying the fundamental properties of matter. Limitations of current THz sources, however, preclude the technique being applied in certain advanced configurations or in the measurement of, e.g., strongly absorbing samples. In response to this problem, here we demonstrate the generation of 1.38 mW broadband THz radiation at 10 MHz repetition rate by combining the highly efficient nonlinear organic crystal HMQ-TMS with ultrafast pump pulses generated using a simple and stable external pulse compression of a high power, near-infrared (NIR) femtosecond ytterbium-doped fiber (Yb:fiber) laser. Utilizing spectral broadening in a large core, polarization maintaining photonic crystal fiber and a pair of SF11 prisms, we achieve a tenfold pulse compression of the Yb:fiber laser, yielding compressed 0.35 µJ pulses with a full-width at half maximum pulse duration of 22 fs, exerting a peak power of 13.8 MW at a repetition rate of 10 MHz. THz generation through optical rectification of the NIR pulses is explored in two distinct thicknesses of the organic crystal, leading to a maximum conversion efficiency of ∼5.5 · 10−4, an order of magnitude higher than that achieved with inorganic nonlinear crystals, e.g., gallium phosphide, for similar pump parameters. The focused THz beam has a peak on-axis field strength greater than 6.4 kV cm−1 in unpurged atmosphere. We believe that our moderately strong-field THz source is well suited to a variety of applications in ultrafast THz spectroscopy, in particular THz-enabled scattering-type near-field, and scanning tunneling spectroscopy, where multi-MHz repetition rate sources are required.	de_CH
dc.language.iso	en	de_CH
dc.publisher	AIP Publishing	de_CH
dc.relation.ispartof	APL Photonics	de_CH
dc.rights	http://creativecommons.org/licenses/by/4.0/	de_CH
dc.subject	THz photonics	de_CH
dc.subject.ddc	540: Chemie	de_CH
dc.subject.ddc	621.3: Elektro-, Kommunikations-, Steuerungs- und Regelungstechnik	de_CH
dc.title	High-power few-cycle THz generation at MHz repetition rates in an organic crystal	de_CH
dc.type	Beitrag in wissenschaftlicher Zeitschrift	de_CH
dcterms.type	Text	de_CH
zhaw.departement	School of Engineering	de_CH
zhaw.organisationalunit	Institute of Computational Physics (ICP)	de_CH
dc.identifier.doi	10.1063/5.0022762	de_CH
dc.identifier.doi	10.21256/zhaw-21559	-
zhaw.funding.eu	No	de_CH
zhaw.issue	10	de_CH
zhaw.originated.zhaw	Yes	de_CH
zhaw.pages.start	106103	de_CH
zhaw.publication.status	publishedVersion	de_CH
zhaw.volume	5	de_CH
zhaw.publication.review	Peer review (Publikation)	de_CH
zhaw.webfeed	Photonics	de_CH
zhaw.author.additional	No	de_CH
zhaw.display.portrait	Yes	de_CH
Appears in collections:	Publikationen School of Engineering

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Buchmann, T. O., Railton Kelleher, E. J., Jazbinsek, M., Zhou, B., Seok, J.-H., Kwon, O.-P., Rotermund, F., & Jepsen, P. U. (2020). High-power few-cycle THz generation at MHz repetition rates in an organic crystal. APL Photonics, 5(10), 106103. https://doi.org/10.1063/5.0022762

Buchmann, T.O. et al. (2020) ‘High-power few-cycle THz generation at MHz repetition rates in an organic crystal’, APL Photonics, 5(10), p. 106103. Available at: https://doi.org/10.1063/5.0022762.

T. O. Buchmann et al., “High-power few-cycle THz generation at MHz repetition rates in an organic crystal,” APL Photonics, vol. 5, no. 10, p. 106103, 2020, doi: 10.1063/5.0022762.

BUCHMANN, Tobias Olaf, Edmund John RAILTON KELLEHER, Mojca JAZBINSEK, Binbin ZHOU, Jin-Hong SEOK, O-Pil KWON, Fabian ROTERMUND und Peter Uhd JEPSEN, 2020. High-power few-cycle THz generation at MHz repetition rates in an organic crystal. APL Photonics. 2020. Bd. 5, Nr. 10, S. 106103. DOI 10.1063/5.0022762

Buchmann, Tobias Olaf, Edmund John Railton Kelleher, Mojca Jazbinsek, Binbin Zhou, Jin-Hong Seok, O-Pil Kwon, Fabian Rotermund, and Peter Uhd Jepsen. 2020. “High-Power Few-Cycle THz Generation at MHz Repetition Rates in an Organic Crystal.” APL Photonics 5 (10): 106103. https://doi.org/10.1063/5.0022762.

Buchmann, Tobias Olaf, et al. “High-Power Few-Cycle THz Generation at MHz Repetition Rates in an Organic Crystal.” APL Photonics, vol. 5, no. 10, 2020, p. 106103, https://doi.org/10.1063/5.0022762.